cmake CASADI examples

opensim-org/opensim-core CMakeLists.txt :802 

find_package(casadi 3.6.5 REQUIRED)

casadi/casadi docs/embeddable_codegen/CMakeLists.txt :7 

find_package(CASADI REQUIRED)

ComputationalBiomechanicsLab/opensim-creator third_party/libosim/opensim-core/CMakeLists.txt :802 

find_package(casadi 3.6.5 REQUIRED)